Skip to content
Pocket Botanist
Get the app

Common Myrtle · Myrtus communis

Why does my Common Myrtle have spots on its leaves?

It is less common for a healthy Common Myrtle to develop spots, which usually points to fungal issues caused by poor air circulation or damp foliage. Check the underside of the leaves and the soil moisture level first.

Not sure it's this? Check a photo of your plant for free

spots on a plant
Photo: Scot Nelson, CC0

Check these first

  1. Inspect the undersides of leaves for tiny bumps.
  2. Check if the soil is staying wet for more than 10 days.
  3. Ensure the plant has space for air to move around it.

Likely causes

  1. Fungal Leaf Spot

    Possible

    How to tell: You will see dark brown or black circular spots appearing on the leaves, often with a yellow halo. This happens when the foliage stays wet for too long.

    What to do: Remove the affected leaves immediately to prevent the spread. Improve air circulation around the plant and avoid overhead watering to keep the leaves dry.

  2. Scale Insects

    Possible

    How to tell: These look like small, hard brown bumps on the stems or the undersides of leaves. They suck sap and can cause small yellow or brown spots where they feed.

    What to do: Gently scrape the bumps off with a fingernail or a soft brush dipped in rubbing alcohol. For larger infestations, apply neem oil or insecticidal soap every 7 days until they are gone.

Leaf spots on other plants

Find out what's wrong with your common myrtle

The list above covers the usual causes. Pocket Botanist looks at a photo of your actual plant and tells you the likely cause, how serious it is, and what to try first. Identification and a health check are free.

Download on the App StoreGet it on Google Play

When to worry

Worry if the spots are spreading rapidly to new growth or if the leaves begin to drop. A few old leaves with minor spots are normal as the plant ages.

Stopping it coming back

Water only at the base of the plant to keep foliage dry and ensure the pot is in a spot with good airflow.

Common Myrtle: spots? Check yours with a photo

Every plant is a little different. Take a photo of your common myrtle and Pocket Botanist tells you which cause is most likely, how serious it is, and what to try first. A few checks a day are free. Save the plant and you get care reminders timed for it.

Download on the App StoreGet it on Google Play

Get the app · Or check it from a photo now, free

Questions people ask

Can I mist my Myrtle to help with spots?
No, misting actually encourages fungal growth. It is better to keep the leaves dry.
Are these spots contagious to my other plants?
Yes, fungal spores can travel through the air or water splashes. Isolate the plant until the spots stop appearing.

Guides to these causes

More problems with Common Myrtle

Back to the Common Myrtle guide

This article was generated with AI on from the plant’s care profile and is general information, not horticultural advice. Read about how we build these guides.